Home / 743,501.27-1,026,012.39-421,203.08

Finding the Fourth Proportional to 743,501.27, 1,026,012.39 and 421,203.08

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Solution

The fourth proportional to 743,501.27, 1,026,012.39 and 421,203.08 is: 581,249.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,501.27 : 1,026,012.39 = 421,203.08 : x
  2. Step 2: Convert to fraction form
    743,501.27/1,026,012.39 = 421,203.08/x
  3. Step 3: Cross multiply
    743,501.27x = 1,026,012.39 × 421,203.08
  4. Step 4: Simplify right side
    743,501.27x = 432,159,578,786.16
  5. Step 5: Solve for x
    x = 432,159,578,786.16/743,501.27
  6. Step 6: Final answer
    x = 581,249.28

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.